Heh, I can see how the Hawaiian shirts would aid with CCW, but yow. Given that my usual fashion runs towards black on black on black, with black highlights, black trim, and black buttons, if I tried wearing one of those things everyone that knows me would instantly know something was up!
Which would kinda defeat the purpose, I'm thinking.
I like the sleeveless Red Kaps, though. (At least, they look like Red Kap workshirts.)
Edit: Heh, go me. They are, in fact, Red Kap shirts. Sadly, the sleeveless ones don't come in their "long" length, so I guess I'll have to buy short sleeve ones and take the sleeves off myself. Better color selection that way, anyway. Not that I need anything other than black and dark grey.